Here’s the voting results from 2004, I’m sure you can either verify or refute that the stats from 2008 were in variance. These results show that the productive class votes conservative, with the most productive voting almost 2 to 1 conservative. I’d be interested in what your point, was, anyway, in attempting to deny this data...
Under $15,000 (8%) Bush:36% Kerry:63%
$15-30,000 (15%) Bush:42% Kerry:57%
$30-50,000 (22%) Bush:49% Kerry:50%
$50-75,000 (23%) Bush:56% Kerry:43%
$75-100,000 (14%) Bush:55% Kerry:45%
$100-150,000 (11%) Bush:57% Kerry:42%
$150-200,000 (4%) Bush:58% Kerry:42%
$200,000 or More (3%) Bush:63% Kerry:35%
Less Than $50,000 (45%) Bush: 44% Kerry: 55%
$50,000 or More (55%) Bush: 56% Kerry: 43%
Less Than $100,000 (82%) Bush: 49% Kerry: 50%
$100,000 or More (18%) Bush: 58% Kerry: 41%
Here: http://elections.nytimes.com/2008/results/president/explorer.html
You can see that in the lowest income counties in America Obama won by 53% to McCain’s 47%
In the highest income counties Obama won 54% and McCain 46%.
Obama of course won in every economic demographic, but McCain tended to do better among the poor.
Here: http://redbluerichpoor.com/blog/2008/11/election-2008-what-really-happened/
you can see that Obama won more than 50% of the higher income. Couldn’t find the equivalent 2008 breakdown that you had, sorry.